The gpio-keys supports the EV_ABS event type, but does not actually configure the input device to work with that mode. This patch configures the axis corresponding to button->code as being in the range [-1,+1]. This makes it possible to use gpio-keys to implement a hat (using the ABS_HAT0X /ABS_HAT0Y axes, with two GPIOs each with values -1/+1). Signed-off-by: Paul Cercueil <paul@xxxxxxxxxxxxxxx> --- drivers/input/keyboard/gpio_keys.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/input/keyboard/gpio_keys.c b/drivers/input/keyboard/gpio_keys.c index 7018c49..1f2850a 100644 --- a/drivers/input/keyboard/gpio_keys.c +++ b/drivers/input/keyboard/gpio_keys.c @@ -540,6 +540,9 @@ static int gpio_keys_setup_key(struct platform_device *pdev, input_set_capability(input, button->type ?: EV_KEY, button->code); + if (button->type == EV_ABS) + input_set_abs_params(input, button->code, -1, 1, 0, 0); + /* * Install custom action to cancel release timer and * workqueue item. -- 2.9.3 -- To unsubscribe from this list: send the line "unsubscribe linux-input" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
